public class Example8_2 {

  public static void main(String args[]) {

       String s1,s2;

       s1 = new String("天道酬勤");

       s2 = new String("天道酬勤");

       System.out.println(s1.equals(s2));   	//输出结果是：true

       System.out.println(s1==s2);          	//输出结果是：false

       String s3,s4; 

       s3 = "we are students";

       s4 = new String("we are students");

       System.out.println(s3.equals(s4));   	//输出结果是：true

       System.out.println(s3==s4);         	//输出结果是：false 

       String s5,s6;

       s5 = "勇者无敌";

       s6 = "勇者无敌"; 

       System.out.println(s5.equals(s6));   	//输出结果是：true

       System.out.println(s5==s6);         	//输出结果是：true

    }

}
